Suratthani Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Suratthani.
Climate overview of Suratthani
The climate in Suratthani, Koh Samui, Thailand, is remarkably consistent, with temperatures year-round averaging 32°C (90°F). The warmest month is April at 35°C (95°F), and the coolest is December at 30°C (86°F).
The city has a wet climate, receiving around 1901 mm (75 in) of rainfall per year. Despite the high annual total, it has a distinct rainy season from September to November. October is the wettest month.
Suratthani Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Suratthani - and find the best time to visit.
Monthly Temperature in Suratthani
In Suratthani temperatures are generally consistent throughout the year. On average, daytime temperatures range from a very warm 35°C (95°F) in April to a very warm 30°C (86°F) in December.
Nighttime temperatures range from 26°C (79°F) in April to 24°C (75°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Suratthani
Suratthani experiences significant rainfall throughout the year, averaging 1901 mm (75 in) of precipitation annually. The seasons in Suratthani bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 312 mm (12 in) of precipitation. This rainfall is distributed across 21 rainy days.
In contrast, the driest month, February, experiences much less rainfall, totaling 43 mm (1.7 in) over 3 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Suratthani Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Suratthani
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January
- Warmest weather: March, April, May and June
- Fewest rainy days: February and March
- Wettest months: September, October and November, when rainfall is highest.
- Seasonal pattern: A distinct rainy season from September to November
Frequently asked questions about the climate in Suratthani
What is the best time to visit Suratthani?
January typically offers the most optimal weather in Suratthani. In contrast, March, April, May, June, July, August, September, October and November tend to have less optimal conditions. Suratthani has a distinct rainy season from September to November.
What temperatures can I expect in Suratthani?
Daytime highs range from 30°C (86°F) in December to 35°C (95°F) in April. Nighttime lows range from 24°C (75°F) to 26°C (79°F). Temperatures stay relatively stable year-round.
How much rain does Suratthani get?
Annual rainfall is around 1901 mm (75 in). October is the wettest month with 312 mm (12 in), while February is the driest with 43 mm (1.7 in).
Suratthani 3-Day Forecast
Suratthani on the map
Suratthani is highlighted - select any city to see its climate.
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